Valve.



D. T. 'WILLIAMS- VALVE. APPLIOTION FILED JULY 28, 190B. 91 9,508, Patented Apr. 27, 1909.

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UNITED STATES PATENT OFFICE.

DAVID T. WILLIAMS, OF PATERSON, NEVV JERSEY, ASSIGNOR TO VACUUM ENGINEERING COMPANY, OF NEW YORK, N. Y., A GOItPORAllON OF NEW YORK.

VALVE To all 'whom it may concern:

Be it` known that I, DAVID T. VViLLIAMs, a

. British subject, residing in the city of Paterson, county of Passaic, State of New Jersey, have invented certain new and useful Improvements in Valves, of which the following is a full, clear, and complete disclosure.

lvy invention relates particularly to that class of valves which are particularly adapted for use in connection with pneumatic cleaning implements. In suoli cleaning implements, it is necessary to provide a valve in the handle of the implement adjacent its end where it is connected with the flexible pipe or conduit in which the suction is produced. Such `a valve should preferably be so constructed as to produce no substantial enlargement in the diameter of the handle of the implement, and at the same time it must have openings of suflicient area so as not to impede the action of the suction in the conduit and handle of the implement. The valve must also be easily controllable, and must also be capable of being ixed at any deiinite degree of opening so that the amount of suction in the cleaning head may be regulated.

For a detailed description of one form of my invention which I at present deem preferable, reference may be had to the following speeiiication and to the accompanying drawing forming a part thereof, in which* Figure 1 is a longitudinal sectional view of my improved valve Fig. 2 is an exterior' view of the same showing the valve casing and the connecting sleeve at the ends removed. Fig. 3 is a transverse sectional view taken substantially on the line A-A, Fig. 2.

Referring to the drawing, the numerals 1 andl 2 indicate respectively outer and inner tubes, accurately fittedto each other, but capable of rotation one within the other.

The numeral 3 indicates a slot in the outer tube 1, which coperates with a stud 4, carried by the inner tube 2, and is provided at its outer end with a thumb-head. This thumb-head is for the purpose of fixing the relative angular positions of the inner and outer tubes. The outer tube 1 is also screwthreaded, as indicated at 6, and engages a screw-threaded cap 7, which is connected With an exteriorly screw-threaded sleeve 8, adapted to be connected with the lflexible Speciicaton of Letters Patent.

Application filed July 28, 1908.

Patented April 27', 1909.

Serial N0. 445,760.

conduit by any suitable form ol' coupling. The opposite end o'l' the inner tube 2 is made 55 conical in shape, as indicated at 9, and is provided with a plurality of tapering slots or openings 10. The corresponding end ol' the outer tube 1 is also made conical in shape, and its inner surface is accurately fitted to the outer surface of the conical portion 9 of the inner tube 2, as indicated at 11. The conical portion 11 of the outer tube 1 is also provided with tapering slots or openings 12, which correspond in shape to the openings 10 in the conical portion 9 of the inner tube. The outer tube 1 is provided with a screwthreaded portion 13 which engages an anteriorly screw-threaded sleeve 14 forming a art of the valve casing 15, which is slightly ulged or extended to give sufficient space between the conical portion 11 and said casing. The outer end of the casing 15 is provided with a sleeve 16, which carries the usual screw-threaded coupling 17 adapted to engage the end of the handle ol' the cleaning implement.

By virtue of the construction above set forth, it will be seen that the openings in the valve through which the air and the cleaning liquid must pass are of a much greater area than where ordinary valves are used, and this area may be easily so designed as to even exceed the area of the conduits through which the suction is produced. This is accomplished without increasing the size ol' the handle ci' the implement to any substantial extent, and without [.)roducing any complicated parts that would be subject to dcterioration or wear.

Having thus described this form of my invention, I do not wish to be understood as being limited to the exact details of form and arrangement of parts set forth, Vfor various changes may be made in same by those skilled in the art without departing from the spirit and scope of my invention.

What I claim and desire to protect by Letters Patent is:

A valve for a pneumatic cleaning implement, comprising inner and outer cylindrical tubes, said tubes being elongated to vform a handle or gripping portion and having conical closures at corresponding ends o'l' each ol' said tubes, said closures having longitu- 105 dinal passages or openings therein, and being adapted to rotate relatively, a stud Cari the handle of the pneumatic cleaning impleried by the inner tube and projecting through l nient.

a segmental slot in the outei tube, said stud l Signed this 22nd day of July, 1908. andslot being located in the cylindrical poi'- r DAVID T WILLIAMS Y tions ol said tubes7 an enlarged casing oar- Y fied by the outer tube and extending about I Witnesses:

the conical ends of said tubes and means at JAMES J. COSGROVE,

the ends ol' said easing l'or Connecting it to JOHN W. PETERS. 

